Procolophon. 13 



17. Imperfect and weathered cast of the palatal surface of the 

 sknll, showing the pre-vomers, pahitines, pterzgoids, transpahitines 

 and basisphenoids. There are also imperfect impressions of a few 

 upper cervical vertebrae. 



Presented by Messrs. A. Vj. & H. TroLLIP. 

 Fernrocks, Tafelberg. 



18. Nodule showing the impression of the maxillaries, and of 

 the upper surface of the ])alatal bones. There are also shown the 

 impressions of the upper f) cervical vertebrae. 



Presented by Messrs. A. E. & H. Trolltp. . 

 Fernrocks, Tafelberg. 



V.\ Miich weathei'ed cast of the palate, showing very satisfac- 

 torily the palatine processes of the premaxillaries, thepre-vomerine 

 and pterygoid teeth. The teeth of tbe maxillary bone are seen to 

 be 7 in number, of which the 1st two are smaller than the others. 

 The teeth, which may be regarded as molars, have broad tlattened 

 crowns. 



Presented by Messrs. A. K. & H. Trollip. 

 Fernrocks, Tafelberg. 



20. Broken nodule showing a very tine cast of the I)ase of the 

 skull. The specimen shows casts of the greater part of the 

 pterygoids, the basisphenoids, l)asioccipital, and the prootic. 

 Some of the connections l)etween the quadrate, quadrato-jugal and 

 pterygoid are also well shown. Casts are also seen of the cervical 

 and of a numbei- of the dorsal vertebrae and ribs. 



Presented by Messrs. A. E. & H. Trollip. 

 Fernrocks, Tafelberg. 



21. Broken nodule, showing impression of the bones of the 

 middle region of the skull. The relations of the pterygoids to the 

 palatines and transpalatines are well shown. 



Presented by Messrs. A. E. & H. Trolltp. 

 Fernrocks, Tafelberg. 



22. Small broken nodule showing impressions of the jaws and 

 of the bones of the back of the skull of a small animal. The 

 specimen shows beautifully the relations of the quadrate, 



